The United States Postal Service World War II Hard Back Book Collection is a comprehensive nonfiction book set that delves into the history and impact of World War II. This collection features illustrated narratives written in English by the United States Postal Service. With a hardcover format, this book set is tailored for an adult audience interested in learning about the significant events of the war through the lens of the postal service. This collection offers a unique perspective on World War II, making it a valuable addition to any history enthusiast's library. There are a couple of dings on the outside collectors sheath.